Also there are several photos at the end of this that I just added. They don't match perfect but might be better than nothing. Also if they are your pics that I ripped from someplace, please let me know so we can give photo credit or if needed remove because of copyright problems. 42rocker
Just found this thread in another area.
http://mg42.us/viewtopic.php?f=17&t=4456
Has a lot more parts and labels that are correct.

B1 Receiver
B2 Cam, lower
B3 Cam, upper
B4 Rivets of the Cams
B5 Detent Pin
B6 Rivet Pin for the Detent
B7 Coil, Spring for the Detent
B8 Recuperator
B9 Coil Spring for the Recuperator
B10 Rivet Pin
B11 Dust Cover
B12 Cylinder Pin for the Dust Cover
B13 Coil Spring for the Dust Cover
B14 Cocking Handle
B15 Ejector Plate (XG3446)
B16 Countersunk Screw for Ejector Plate (not shown)
B17 Safety Lever
B18 Safety Rest
B19 Coil Spring for Safety Rest
B20 Rivet Pin for Safety Rest
B21 Trigger Lever
B22 Pin for Trigger Lever
B23 Coil Spring for the Trigger Lever
B24 Angled Lever
B25 Rivet Pin for the Angled Lever
B26 Mounting Pin
B27 Rivet Pin for the Mounting Pin (not shown)
B28 Buffer Detent
B29 Coil Spring for the Buffer Detent
B30 Rivet Pin for the Buffer Detent
_______________________________________________________________________________________
C1 Grip
C2 Trigger Rod
C3 Trigger
C4 Trigger Detent
C5 Coil Spring for Trigger Detent
C6 Rivet Pin for Trigger Detent
C7 Coil Spring for Trigger
C8 Spring Head
C9 Disconnector
C10 Coil Spring for Disconnector
C11 Rivet Pin for Disconnector
C12 Detent Hook
C14 Rivet Pin for Detent Hook
C15 Coil Spring for Detent Hook
C16 Down Pusher
C22 Grip Plate, right
C23 Grip Plate, Left
C24 Holding Screw, shorter
C25 Holding Screw, Longer
C28 Split Bushing
C29 Split Pin
C26/27 Rivet Screw
______________________________________________________________________________________

Bolt shown with Early Firing Pin Nut
D4 Bolt Head
D5 Ejector
D6 Coil Spring for Ejector
D7 Rivet for Ejector
D8 Ejector Pin
D9 Rivet for Ejector Pin
D10 Firing Pin Lever
D11 Coil Spring for Firing Pin Lever
D12 Rivet for Firing Pin Lever
D13 Extractor
D14 Retainer for Extractor
D15 Coil Spring for Retainter
D16 Firing Pin
D17 Coil Spring for Firing Pin
D18 Firing Pin Spring Retainer
D19 Lower Roller
D20 Upper Roller
D21 Spring Ring
D22 Bolt Housing
D23 Firing Pin Nut
D24 Firing Pin Nut , Complete

D23T1 Firing Pin Nut, Complete
D24T1 Firing Pin Nut
D25T1 Firing Pin Detent
D26T1 Coil Spring for Firing Pin Detent
D27T1 Rivet for Firing Pin Detent
__________________________________________________________________________________________

A2 Front Threaded Bushing
A3 Sight Holder
A4 Sight
A5 Threaded Pin
A6 Detent Pin For Sight Holder
A7 Coil Spring for Detent Pin
A8 Rivet for Sight Holder
A9 Detent
A10 Coil Spring for Detent
A11 Rivet for Detent
A12 Detent Spring
A13 Rivet for Detent Spring
A41 Recoil Bushing
A42 Nozzle
A43Flash Suppressor
______________________________________________________________________________________________________________

A14 Screw for Detent Spring
A17 Knob
A18 Locking Piece
A19 Bolt Catch
A20 Coil Spring for Bolt Catch
A21 rivet for Bolt Catch
A22 Receiver Detent
A23 Coil Spring for Receiver Detent
A24 Rivet for Receiver Detent
A25 Detent Pin
A26 Coil Spring for Limit Pin
A27 Push Button
A28 Sight Bar
A29 Sight Slide
A30 Sight Button
A31 Button Rest
A32 Coil Spring for Button
A33 Cylinder Pin for Sight Bar
A34 Aircraft Sight
A35 Leaf Spring
A36 Rivet for Aircraft Sight
A37 Sight Pin
A38 Rivet for Sight Pin
A39 Pressure Pin for Sight Bar
A40 Coil Spring for Pressure Pin
____________________________________________________________________________________________________________

A15 Circle Sight Holder
A16 Rivet For Circle Sight Holder
____________________________________________________________________________________________________________

Different pic but best I have at this time E1 Buffer Housing
E2 Buffer
E3 Coil Spring for Buffer
E4 Retaining Spring
E5 Disk
E6 Back Closing Screw
E7 Buttstock Bushing
E8 Buttstock Detent
E9 Coil Spring for Buttstock Detent
E10 Cylinder Pin
E11 Buttstock
E15 Buttstock Bolt